A man broke into his former partner’s house, picked up a knife and attacked another man, breaking to his arm, a court has heard.

Jordan Cullen visited the property in Cadle Crescent in Portmead on Father’s Day last June, and got into the house by climbing through a window.

Swansea Crown Court was told the 24-year-old then armed himself with a knife, after which he discovered another man sleeping in the bedroom of one of his children.

A confrontation then ensued, during the course of which his victim’s arm was broken.

Prosecuting, Ian Wright told the court that Cullen, of Moorview Road in Gendros, had a number of previous convictions, his first being for battery when aged just 14.

Jordan Cullen, of Moorview Road, Gendros. (Image: South Wales Police)

He was also convicted of affray in 2012 after attempting to enter a property in Heol Frank, Penlan, armed with a baseball bat.

In 2014 he again attended a property in Cadle Crescent while intoxicated, where he punched a woman in the face, before attacking a passer-by in the street, punching and kicking him to the face after he fell to the floor.

Mitigating, Andrew Evans said he had visited the property on Fathers’ Day after it had been agreed he could attend to have lunch with his children, and he had then gone home, but had returned later.

“This man was in his daughter’s bedroom which triggered a reaction in Mr Cullen which resulted in the injury.

“In hindsight, he accepts he could have dealt with it differently. He should have stepped back.

“He stands the risk of custody today which may have a significant impact on his life long-term.

“He is now in a relationship with a woman expecting their child in the next few weeks.

“He accepts he may not be there for the birth of his child or to support them. And there are concerns about his tenancy.”

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“You attacked him and in the course of the assault his arm was badly broken [but] there is no suggesting the knife was used.

“It was a significant and serious injury, although the mechanism in which it was broken is not clear. It is unlikely his elbow will ever be fully functional.

“I acknowledge you have done well in your pre-sentence supervision and acknowledge you were acting in many ways concerned of your children, and perhaps emotionally affected because it was Fathers’ Day.

“But no matter how well you had done in the past [with probation services] they are to try and stop you assaulting people and it has clearly failed.

“You are only 24 but already have accumulated a bad record of violence, and been to prison for violence.”

Cullen had pleaded guilty to grievous bodily harm, and was sentenced to 18 months, of which he was told he would serve half in custody.